msd extreme output hei kit - jegs.com · a factory hei or points type distributor, a relay, msd pn...

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Page 1: MSD Extreme Output HEI Kit - jegs.com · a factory HEI or points type distributor, a relay, MSD PN 8961, will be required. ... Apply a liberal coat of the Heat Sink Compound to the

AUTOTRONIC CONTROLS CORPORATION • 1490 HENRY BRENNAN DR., EL PASO, TEXAS 79936 • (915) 857-5200 • FAX (915) 857-3344

Figure 2 Installing the Module.

MSD Extreme Output HEI KitPN 8502

Parts Included:1 - Extreme Output HEI Module, PN 836411 - Extreme Output HEI Coil, PN 82201 - Extreme Output HEI Cap, 841111 - Extreme Output HEI Rotor, 841011 - Extreme Output HEI Coil Cover, PN 840221 - Rotor Adapter (for use on MSD Distributor,

PN 8365, only)

1 - Low Resistance Rotor Bushing and Insulator

1 - Tube of Heat Sink Compound3 - Mounting Screws and Star Washers1 - Small Screw Driver

Figure 1 Adjusting the Rev Limiter.

IMPORTANT: If you are installing the Extreme Output HEI Kit in an engine that was equipped witha factory HEI or points type distributor, a relay, MSD PN 8961, will be required.

TRACTION CONTROL DETECTIONThe Extreme Output HEI Module has a unique Traction Control Detection (TCD) code built into itsmicroprocessor. This technology carefully monitors and examines the signals of the ignition. If theTCD determines that any signal has been modified in any way, the ignition will be put into a lowrpm rev limit mode to immediately slow the car. Before this rev limit is imposed, the TCD goesthrough a list of cycles and checks to qualify that thetrigger has been modified. There is no way to bypass ordeactivate the TCD circuitry.

ADJUSTABLE REV LIMITERThe Extreme Output HEI Module also features an adjustablerev limiter. The limit is adjusted through the small rotary dialon the end of the module (Figure 1). This limiter is adjustablefrom 5,000 - 10,000 rpm. Turning the rotary dial clockwiseraises the limit, CCW lowers the rpm limit. It doesn’t takemuch movement for changes so it is recommended to startlow and bump the rev limit up a little at a time.

INSTALLATION1. Remove the cap, rotor and module

of the original distributor. Make surethe mechanical advance weightsmove freely and do not bind. Alsoensure that the distributor shaftrotates smooth with no wobble orbinding.

2. Apply a liberal coat of the HeatSink Compound to the aluminumbase of the Module and to therubber insulator. Route the wiringharness out of the housing thenlocate the three screws and starwashers and install the module(Figure 2).

Page 2: MSD Extreme Output HEI Kit - jegs.com · a factory HEI or points type distributor, a relay, MSD PN 8961, will be required. ... Apply a liberal coat of the Heat Sink Compound to the

2 INSTALLATION INSTRUCTIONS

AUTOTRONIC CONTROLS CORPORATION • 1490 HENRY BRENNAN DR., EL PASO, TEXAS 79936 • (915) 857-5200 • FAX (915) 857-3344

3. Install the rotor. If you are using an MSD HEIPro-Billet Distributor, PN 8365, the suppliedRotor Adapter must be installed (Figure 3).

4. Install the cap.

5. Position the supplied Low Resistance RotorBushing in place (spring side up) followedby the rubber insulator (Figure 4).

6. Install the Coil in the distributor cap. Routethe wires into position (Figure 5). The Redwire goes to the B+/Bat side of the cap asindicated on the Dust Cover. The Yellow wireis the C-/Tach. The Black wire goes in thecenter position and is Ground.

7. Install the spark plug wires to their respectivecap terminals, then install the MSD DustCover and its three retaining screws.

8. Connect the HEI Module harness to theDistributor Cap. See the Tachometer Wiringsection before connecting your tachometer(Figure 6).

Figure 3 Installing the Rotor Adapter on an MSD PN 8365 HEI Distributor.

Figure 4 Installing the Coil RotorBushing and Insulator.

Page 3: MSD Extreme Output HEI Kit - jegs.com · a factory HEI or points type distributor, a relay, MSD PN 8961, will be required. ... Apply a liberal coat of the Heat Sink Compound to the

INSTALLATION INSTRUCTIONS 3

AUTOTRONIC CONTROLS CORPORATION • 1490 HENRY BRENNAN DR., EL PASO, TEXAS 79936 • (915) 857-5200 • FAX (915) 857-3344

9. Connect a 12-gauge (minimum gauge) wireto the Bat terminal of the cap to supply the12 volts to the HEI system.

Note: The stock wiring will not be able tohandle the voltage and energydemands of the new module. A relay,such as MSD PN 8961, must be usedto handle the high current in order toretain the factory On/Off ignition switch(Figure 6).

TACHOMETER INFORMATIONThe Extreme Output HEI Module has a Green wire that provides a 12 volt, 20° tachometer signalthat will trigger most tachometers. It is recommended to connect this lead to your tach’s triggerinput wire and check it’s operation. If the tach requires a higher voltage signal, connect it to theTach terminal on the HEI Cap (Coil-). An MSD Tach Adapter, PN 8920, could also be used with theGreen wire output to boost the voltage signal.

Figure 5 Installing the Coil's Wiring.

Figure 6 Connecting the Module and Tach Lead.

Page 4: MSD Extreme Output HEI Kit - jegs.com · a factory HEI or points type distributor, a relay, MSD PN 8961, will be required. ... Apply a liberal coat of the Heat Sink Compound to the

AUTOTRONIC CONTROLS CORPORATION • 1490 HENRY BRENNAN DR., EL PASO, TEXAS 79936 • (915) 857-5200 • FAX (915) 857-3344

FRM25660 Created 03/04 Printed In U.S.A.

Limited Warranty

Autotronic Controls Corporation warrants MSD Ignition products to be free from defects in materialand workmanship under normal use and if properly installed for a period of one year from date of purchase.If found to be defective as mentioned above, it will be replaced or repaired if returned prepaid along withproof of date of purchase. This shall constitute the sole remedy of the purchaser and the sole liability ofAutotronic Controls Corporation. To the extent permitted by law, the foregoing is exclusive and in lieu ofall other warranties or representations whether expressed or implied, including any implied warranty ofmerchantability or fitness. In no event shall Autotronic Controls Corporation be liable for special orconsequential damages.

Service

In case of malfunction, this MSD component will be repaired free of charge according to the terms ofthe warranty. When returning MSD components for service, Proof of Purchase must be supplied for warrantyverification. After the warranty period has expired, repair service is charged based on a minimum andmaximum charge.

Send the unit prepaid with proof of purchase to the attention of: Customer Service Department,Autotronic Controls Corporation, 12120 Esther Lama, Suite 114, El Paso, Texas 79936.

When returning the unit for repair, leave all wires at the length in which you have them installed. Besure to include a detailed account of any problems experienced, and what components and accessoriesare installed on the vehicle.

The repaired unit will be returned as soon as possible after receipt, COD for any charges. (Groundshipping is covered by warranty). All units are returned regular UPS unless otherwise noted. For moreinformation, call the MSD Customer Service Line (915) 855-7123. MSD technicians are available from 8:00a.m. to 5:00 p.m. Monday - Friday (mountain time).

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